Bevel Gear , Terminology of Bevel Gear

   -: Bevel Gear :- 

A gear which used for transmitting power at a constant velocity ratio between two shafts whose axes intersect at a certain angle is known as bevel gear . 

     -: Terminology of Bevel Gear :- 

The terminology of bevel gear are as follows - 

1- Pitch Cone :- An imaginary cone , whose surface contains the pitch lines of all teeth , is known as pitch cone . 

2- Cone Center :- That point where the axes of two mating gears intersect each other is known as cone center . It is the apes of the cone . It is denoted by 'O' . 

3- Cone Distance :- The length of pitch cone element is known as cone distance . It is also known as pitch cone radius. 

4- Pitch Angle :- The angle that the pitch line makes with the axis of the gear is called pitch angle . It is denoted by '𝚹p'.It is also called as center angle . 

5- Addendum angle :- The angle subtended by the addendum at the cone center is known as addendum angle . It is denoted by '𝛂'.

6- Dedendum Angle :-  The angle subtended by the dedendum of the cone center is known as dedendum angle . It is denoted by '𝛃'. 

7- Face Angle :- The angle subtended by the face of the tooth at the cone center is known as face angle . 

8- Root Angle :- The angle subtended by the root of the tooth at the cone center is known as root angle . 

9- Back Cone :- An imaginary cone and its elements are perpendicular to the elements of the pitch cone is known as back cone . 

10- Back cone Distance :- The length of the back cone element is known as back cone distance . It is also called back cone radius .